tags/sqlite0853/sqlite/nucleus/sqlite/sqlite.php

   1 <?php
   2     /***************************************
   3     * SQLite-MySQL wrapper for Nucleus     *
   4     *                           ver 0.8.5.2*
   5     * Written by Katsumi                   *
   6     ***************************************/
   7 //
   8 //  The licence of this script is GPL
   9 //
  10 //                ACKOWLEDGMENT
  11 //
  12 //  I thank all the people of Nucleus JP forum
  13 //  who discussed this project. Especially, I
  14 //  thank kosugiatkips, mekyo, and nakahara21
  15 //  for ideas of some part of code.
  16 //  I also thank Jon Jensen for his generous
  17 //  acceptance for using his PHP code in this
  18 //  script.
  19 //
  20 //  The features that are supported by this script but not
  21 //  generally by SQLite are as follows:
  22 //
  23 //  CREATE TABLE IF NOT EXISTS, auto_increment,
  24 //  DROP TABLE IF EXISTS, ALTER TABLE,
  25 //  INSERT INTO ... SET xx=xx, xx=xx,
  26 //  REPLACE INTO ... SET xx=xx, xx=xx,
  27 //  SHOW KEYS FROM, SHOW INDEX FROM,
  28 //  SHOW FIELDS FROM, SHOW COLUMNS FROM,
  29 //  CREATE TABLE ... KEYS xxx (xxx,xxx)
  30 //  SHOW TABLES LIKE, TRUNCATE TABLE
  31 //  SHOW TABLES
  32 //
  33 // Release note:
  34 //  Version 0.8.0
  35 //    -This is the first established version and
  36 //     exactly the same as ver 0.7.8b.
  37 //
  38 //  Version 0.8.1
  39 //    -Execute "PRAGMA short_column_names=1" first.
  40 //    -Avoid executing outside php file in some very specfic environment.
  41 //    -Avoid executing multiple queries using ";" as delimer.
  42 //    -Add check routine for the installed SQLite
  43 //
  44 //  Version 0.8.5
  45 //    -Use SQLite_Functions class
  46 //    -'PRAGMA synchronous = off;' when installing
  47
  48 // Check SQLite installed
  49
  50 if (!function_exists('sqlite_open')) exit('Sorry, SQLite is not installed in the server.');
  51
  52 // Initializiation stuff
  53 require_once dirname(__FILE__) . '/sqliteconfig.php';
  54 $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
  55 require_once dirname(__FILE__) . '/sqlitequeryfunctions.php';
  56 $SQLITECONF['VERSION']='0.8.5';
  57
  58 //Following thing may work if MySQL is NOT installed in server.
  59 if (!function_exists('mysql_query')) {
  60         define ("MYSQL_ASSOC", SQLITE_ASSOC);
  61         define ("MYSQL_BOTH", SQLITE_BOTH);
  62         define ("MYSQL_NUM", SQLITE_NUM);
  63         function mysql_connect(){
  64                 global $SQLITECONF;
  65                 $SQLITECONF['OVERRIDEMODE']=true;
  66                 $args=func_get_args();
  67                 return call_user_func_array('nucleus_mysql_connect',$args);
  68         }
  69         foreach (array('mysql_affected_rows','mysql_change_user','mysql_client_encoding','mysql_close',
  70                 'mysql_create_db','mysql_data_seek','mysql_db_name','mysql_db_query','mysql_drop_db','mysql_errno',
  71                 'mysql_error','mysql_escape_string','mysql_fetch_array','mysql_fetch_assoc','mysql_fetch_field','mysql_fetch_lengths',
  72                 'mysql_fetch_object','mysql_fetch_row','mysql_field_flags','mysql_field_len','mysql_field_name','mysql_field_seek',
  73                 'mysql_field_table','mysql_field_type','mysql_free_result','mysql_get_client_info','mysql_get_host_info',
  74                 'mysql_get_proto_info','mysql_get_server_info','mysql_info','mysql_insert_id','mysql_list_dbs',
  75                 'mysql_list_fields','mysql_list_processes','mysql_list_tables','mysql_num_fields','mysql_num_rows','mysql_numrows',
  76                 'mysql_pconnect','mysql_ping','mysql_query','mysql_real_escape_string','mysql_result','mysql_select_db',
  77                 'mysql_stat','mysql_tablename','mysql_thread_id','mysql_unbuffered_query')
  78                  as $value) eval(
  79                 "function $value(){\n".
  80                 "  \$args=func_get_args();\n".
  81                 "  return call_user_func_array('nucleus_$value',\$args);\n".
  82                 "}\n");
  83 }
  84
  85 // Empty object for mysql_fetch_object().
  86 class SQLITE_OBJECT {}
  87
  88 function sqlite_ReturnWithError($text='Not supported',$more=''){
  89         // Show warning when error_reporting() is set.
  90         if (!(error_reporting() & E_WARNING)) return false;
  91
  92         // Seek the file and line that originally called sql function.
  93         $a=debug_backtrace();
  94         foreach($a as $key=>$btrace) {
  95                 if (!($templine=$btrace['line'])) continue;
  96                 if (!($tempfile=$btrace['file'])) continue;
  97                 $file=str_replace("\\",'/',$file);
  98                 if (!$line && !$file && strpos($tempfile,'/sqlite.php')===false && strpos($tempfile,'/sqlitequeryfunctions.php')===false) {
  99                         $line=$templine;
 100                         $file=$tempfile;
 101                 }
 102                 echo "\n<!--$tempfile line:$templine-->\n";
 103         }
 104         echo "Warning from SQLite-MySQL wrapper: $text<br />\n";
 105         if ($line && $file) echo "in <b>$file</b> on line <b>$line</b><br />\n";
 106         echo $more;
 107         return false;
 108 }
 109 function sqlite_DebugMessage($text=''){
 110         global $SQLITECONF;
 111         if (!$SQLITECONF['DEBUGREPORT']) return;
 112         if ($text) $SQLITECONF['DEBUGMESSAGE'].="\n".$text."\n";
 113         if (headers_sent()) {
 114                 echo '<!--sqlite_DebugMessage'.$SQLITECONF['DEBUGMESSAGE'].'sqlite_DebugMessage-->';
 115                 unset($SQLITECONF['DEBUGMESSAGE']);
 116         }
 117 }
 118
 119 // nucleus_mysql_XXXX() functions follow.
 120
 121 function nucleus_mysql_connect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 122         // All prameters are ignored.
 123         global $SQLITE_DBHANDLE,$SQLITECONF;
 124         if (!$SQLITE_DBHANDLE) $SQLITE_DBHANDLE=sqlite_open($SQLITECONF['DBFILENAME']);
 125         // Initialization queries.
 126         foreach($SQLITECONF['INITIALIZE'] as $value) nucleus_mysql_query($value);
 127         return $SQLITE_DBHANDLE;
 128 }
 129
 130 function nucleus_mysql_close($p1=null){
 131         global $SQLITE_DBHANDLE;
 132         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 133         $SQLITE_DBHANDLE='';
 134         return sqlite_close ($dbhandle);
 135 }
 136
 137 function nucleus_mysql_select_db($p1,$p2=null){
 138         // SQLite does not support multiple databases in a file.
 139         // So this function do nothing and always returns true.
 140         // Note: mysql_select_db() function returns true/false,
 141         // not link-ID.
 142         return true;
 143 }
 144
 145 function nucleus_mysql_query($p1,$p2=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 146         global $SQLITE_DBHANDLE,$SQLITECONF;
 147         if (!($dbhandle=$p2)) $dbhandle=$SQLITE_DBHANDLE;
 148         $query=trim($p1);
 149         if (strpos($query,"\xEF\xBB\xBF")===0) $query=substr($query,3);// UTF-8 stuff
 150         if (substr($query,-1)==';') $query=substr($query,0,strlen($query)-1);
 151
 152         // Escape style is changed from MySQL type to SQLite type here.
 153         // This is important to avoid possible SQL-injection.
 154         $strpositions=array();// contains the data show where the strings are (startposition => endposition)
 155         if (strpos($query,'`')!==false || strpos($query,'"')!==false || strpos($query,"'")!==false)
 156                 $strpositions=sqlite_changeQuote($query);
 157         //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 158
 159         // Debug mode
 160         if ($SQLITECONF['DEBUGMODE']) $query=sqlite_mysql_query_debug($query);
 161
 162         // Anyway try it.
 163         if ($unbuffered) {
 164                 if ($ret=@sqlite_unbuffered_query($dbhandle,$query)) return $ret;
 165         } else {
 166                 if ($ret=@sqlite_query($dbhandle,$query)) return $ret;
 167         }
 168
 169         // Error occured. Query must be translated.
 170         return sqlite_mysql_query_sub($dbhandle,$query,$strpositions,$p1,$unbuffered);
 171 }
 172 function sqlite_mysql_query_sub($dbhandle,$query,$strpositions=array(),$p1=null,$unbuffered=false){//echo htmlspecialchars($p1)."<br />\n";
 173         // Query translation is needed, especially when changing the data in database.
 174         // So far, this routine is written for 'CREATE TABLE','DROP TABLE', 'INSERT INTO',
 175         // 'SHOW TABLES LIKE', 'SHOW KEYS FROM', 'SHOW INDEX FROM'
 176         // and several functions used in query.
 177         // How about 'UPDATE' ???
 178         global $SQLITE_DBHANDLE,$SQLITECONF;
 179         $beforetrans=time()+microtime();
 180         if (!$p1) $p1=$query;
 181         $morequeries=array();
 182         $uquery=strtoupper($query);
 183         if (strpos($uquery,'CREATE TABLE')===0 || ($temptable=(strpos($uquery,'CREATE TEMPORARY TABLE')===0))) {
 184                 if (!($i=strpos($query,'('))) return sqlite_ReturnWithError('nucleus_mysql_query: '.$p1);
 185                 //check if the command is 'CREATE TABLE IF NOT EXISTS'
 186                 if (strpos(strtoupper($uquery),'CREATE TABLE IF NOT EXISTS')===0) {
 187                         $tablename=trim(substr($query,26,$i-26));
 188                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 189                         $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 190                         if (nucleus_mysql_num_rows($res)) return true;
 191                 } else {
 192                         $tablename=trim(substr($query,12,$i-12));
 193                         if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 194                 }
 195
 196                 $query=trim(substr($query,$i+1));
 197                 for ($i=strlen($query);0<$i;$i--) if ($query[$i]==')') break;
 198                 $query=substr($query,0,$i);
 199                 $auto_increment=false;
 200                 $commands=sqlite_splitByComma($query);
 201                 $query=' (';
 202                 $first=true;
 203                 foreach($commands as $key => $value) {
 204                         if (strpos(strtolower($value),'auto_increment')==strlen($value)-14) $auto_increment=true;
 205                         $isint=preg_match('/int\(([0-9]*?)\)/i',$value);
 206                         $isint=$isint | preg_match('/tinyint\(([0-9]*?)\)/i',$value);
 207                         $value=preg_replace('/int\(([0-9]*?)\)[\s]+unsigned/i','int($1)',$value);
 208                         $value=preg_replace('/int\([0-9]*?\)[\s]+NOT NULL[\s]+auto_increment$/i',' INTEGER NOT NULL PRIMARY KEY',$value);
 209                         $value=preg_replace('/int\([0-9]*?\)[\s]+auto_increment$/i',' INTEGER PRIMARY KEY',$value);
 210                         if ($auto_increment) $value=preg_replace('/^PRIMARY KEY(.*?)$/i','',$value);
 211                         while (preg_match('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i',$value)) // Remove '(100)' from 'PRIMARY KEY (`xxx` (100))'
 212                                 $value=preg_replace('/PRIMARY KEY[\s]*\((.*)\([0-9]+\)(.*)\)/i','PRIMARY KEY ($1 $2)',$value);
 213
 214                         // CREATE KEY queries for SQLite (corresponds to KEY 'xxxx'('xxxx', ...) of MySQL
 215                         if (preg_match('/^FULLTEXT KEY(.*?)$/i',$value,$matches)) {
 216                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 217                                 $value='';
 218                         } else if (preg_match('/^UNIQUE KEY(.*?)$/i',$value,$matches)) {
 219                                 array_push($morequeries,'CREATE UNIQUE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 220                                 $value='';
 221                         } else if (preg_match('/^KEY(.*?)$/i',$value,$matches)) {
 222                                 array_push($morequeries,'CREATE INDEX '.str_replace('('," ON $tablename (",$matches[1]));
 223                                 $value='';
 224                         }
 225
 226                         // Check if 'DEFAULT' is set when 'NOT NULL'
 227                         $uvalue=strtoupper($value);
 228                         if (strpos($uvalue,'NOT NULL')!==false &&
 229                                         strpos($uvalue,'DEFAULT')===false &&
 230                                         strpos($uvalue,'INTEGER NOT NULL PRIMARY KEY')===false) {
 231                                 if ($isint) $value.=" DEFAULT 0";
 232                                 else $value.=" DEFAULT ''";
 233                         }
 234
 235                         if ($value) {
 236                                 if ($first) $first=false;
 237                                 else $query.=',';
 238                                  $query.=' '.$value;
 239                         }
 240                 }
 241                 $query.=' )';
 242                 if ($temptable) $query='CREATE TEMPORARY TABLE '.$tablename.$query;
 243                 else $query='CREATE TABLE '.$tablename.$query;
 244                 //echo "<br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n";
 245         } else if (strpos($uquery,'DROP TABLE IF EXISTS')===0) {
 246                 if (!($i=strpos($query,';'))) $i=strlen($query);
 247                 $tablename=trim(substr($query,20,$i-20));
 248                 if (substr($tablename,0,1)!="'") $tablename="'$tablename'";
 249                 $res=sqlite_query($dbhandle,"SELECT tbl_name FROM sqlite_master WHERE tbl_name=$tablename LIMIT 1");
 250                 if (!nucleus_mysql_num_rows($res)) return true;
 251                 $query='DROP TABLE '.$tablename;
 252         } else if (strpos($uquery,'ALTER TABLE ')===0) {
 253                 $query=trim(substr($query,11));
 254                 if ($i=strpos($query,' ')) {
 255                         $tablename=trim(substr($query,0,$i));
 256                         $query=trim(substr($query,$i));
 257                         $ret =sqlite_altertable($tablename,$query,$dbhandle);
 258                         if (!$ret) sqlite_ReturnWithError('SQL error',"<br /><i>".nucleus_mysql_error()."</i><br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars("ALTER TABLE $tablename $query")."<hr />\n");
 259                         return $ret;
 260                 }
 261                 // Syntax error
 262                 $query=='DROP TABLE '.$query;
 263         } else if (strpos($uquery,'INSERT INTO ')===0 || strpos($uquery,'REPLACE INTO ')===0 ||
 264                         strpos($uquery,'INSERT IGNORE INTO ')===0 || strpos($uquery,'REPLACE IGNORE INTO ')===0) {
 265                 $buff=str_replace(' IGNORE ',' OR IGNORE ',substr($uquery,0,($i=strpos($uquery,' INTO ')+6)));
 266                 $query=trim(substr($query,$i));
 267                 if ($i=strpos($query,' ')) {
 268                         $buff.=trim(substr($query,0,$i+1));
 269                         $query=trim(substr($query,$i));
 270                 }
 271                 if ($i=strpos($query,' ')) {
 272                         if (strpos(strtoupper($query),'SET')===0) {
 273                                 $query=trim(substr($query,3));
 274                                 $commands=sqlite_splitByComma($query);
 275                                 $query=' VALUES(';
 276                                 $buff.=' (';
 277                                 foreach($commands as $key=>$value){
 278                                         //echo "[".htmlspecialchars($value)."]";
 279                                         if (0<$key) {
 280                                                 $buff.=', ';
 281                                                 $query.=', ';
 282                                         }
 283                                         if ($i=strpos($value,'=')) {
 284                                                 $buff.=trim(substr($value,0,$i));
 285                                                 $query.=substr($value,$i+1);
 286                                         }
 287                                 }
 288                                 $buff.=')';
 289                                 $query.=')';
 290                         } else {
 291                                 $beforevalues='';
 292                                 $commands=sqlite_splitByComma($query);
 293                                 $query='';
 294                                 foreach($commands as $key=>$value){
 295                                         if ($beforevalues=='' && preg_match('/^(.*)\)\s+VALUES\s+\(/i',$value,$matches)) {
 296                                                 $beforevalues=$buff.' '.$query.$matches[1].')';
 297                                         }
 298                                         if (0<$key) $query.=$beforevalues.' VALUES ';// supports multiple insertion
 299                                         $query.=$value.';';
 300                                 }
 301                         }
 302                 }
 303                 $query=$buff.' '.$query;
 304         } else if (strpos($uquery,'SHOW TABLES LIKE ')===0) {
 305                 $query='SELECT name FROM sqlite_master WHERE type=\'table\' AND name LIKE '.substr($query,17);
 306         } else if (strpos($uquery,'SHOW TABLES')===0) {
 307                 $query='SELECT name FROM sqlite_master WHERE type=\'table\'';
 308         } else if (strpos($uquery,'SHOW KEYS FROM ')===0) {
 309                 $query=sqlite_showKeysFrom(trim(substr($query,15)),$dbhandle);
 310         } else if (strpos($uquery,'SHOW INDEX FROM ')===0) {
 311                 $query=sqlite_showKeysFrom(trim(substr($query,16)),$dbhandle);
 312         } else if (strpos($uquery,'SHOW FIELDS FROM ')===0) {
 313                 $query=sqlite_showFieldsFrom(trim(substr($query,17)),$dbhandle);
 314         } else if (strpos($uquery,'SHOW COLUMNS FROM ')===0) {
 315                 $query=sqlite_showFieldsFrom(trim(substr($query,18)),$dbhandle);
 316         } else if (strpos($uquery,'TRUNCATE TABLE ')===0) {
 317                 $query='DELETE FROM '.substr($query,15);
 318         } else SQLite_Functions::sqlite_modifyQueryForUserFunc($query,$strpositions);
 319
 320         //Throw query again.
 321         $aftertrans=time()+microtime();
 322         if ($unbuffered) {
 323                 $ret=sqlite_unbuffered_query($dbhandle,$query);
 324         } else {
 325                 $ret=sqlite_query($dbhandle,$query);
 326         }
 327
 328         $afterquery=time()+microtime();
 329         if ($SQLITECONF['MEASURESPEED']) sqlite_DebugMessage("translated query:$query\n".
 330                 'translation: '.($aftertrans-$beforetrans).'sec, query: '.($afterquery-$aftertrans).'sec');
 331         if (!$ret) sqlite_ReturnWithError('SQL error',"<br /><i>".nucleus_mysql_error()."</i><br />".htmlspecialchars($p1)."<br /><br />\n".htmlspecialchars($query)."<hr />\n");
 332         foreach ($morequeries as $value) if ($value) @sqlite_query($dbhandle,$value);
 333         return $ret;
 334 }
 335 function sqlite_changeQuote(&$query){
 336         // This function is most important.
 337         // When you modify this function, do it very carefully.
 338         // Otherwise, you may allow crackers to do SQL-injection.
 339         // This function returns array that shows where the strings are.
 340         $sarray=array();
 341         $ret='';
 342         $qlen=strlen($query);
 343         for ($i=0;$i<$qlen;$i++) {
 344                 // Go to next quote
 345                 if (($i1=strpos($query,'"',$i))===false) $i1=$qlen;
 346                 if (($i2=strpos($query,"'",$i))===false) $i2=$qlen;
 347                 if (($i3=strpos($query,'`',$i))===false) $i3=$qlen;
 348                 if ($i1==$qlen && $i2==$qlen && $i3==$qlen) {
 349                         $ret.=($temp=substr($query,$i));
 350                         if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 351                         break;
 352                 }
 353                 if ($i2<($j=$i1)) $j=$i2;
 354                 if ($i3<$j) $j=$i3;
 355                 $ret.=($temp=substr($query,$i,$j-$i));
 356                 $c=$query[($i=$j)]; // $c keeps the type of quote.
 357                 if (strstr($temp,';')) exit('Warning: try to use more than two queries?');
 358
 359                 // Check between quotes.
 360                 // $j shows the begging positioin.
 361                 // $i will show the ending position.
 362                 $j=(++$i);
 363                 while ($i<$qlen) {
 364                         if (($i1=strpos($query,$c,$i))===false) $i1=$qlen;
 365                         if (($i2=strpos($query,"\\",$i))===false) $i2=$qlen;
 366                         if ($i2<$i1) {
 367                                 // \something. Skip two characters.
 368                                 $i=$i2+2;
 369                                 continue;
 370                         } if ($i1<($qlen-1) && $query[$i1+1]==$c) {
 371                                 // "", '' or ``.  Skip two characters.
 372                                 $i=$i1+2;
 373                                 continue;
 374                         } else {// OK. Reached the end position
 375                                 $i=$i1;
 376                                 break;
 377                         }
 378                 }
 379                 $i1=strlen($ret);
 380                 $ret.="'".sqlite_changeslashes(substr($query,$j,$i-$j));
 381                 if ($i<$qlen) $ret.="'"; //else Syntax error in query.
 382                 $i2=strlen($ret);
 383                 $sarray[$i1]=$i2;
 384         }//echo htmlspecialchars($query).'<br />'.htmlspecialchars($ret).'<br />';
 385         $query=$ret;
 386         return $sarray;
 387 }
 388 function sqlite_splitByComma($query) {
 389         // The query is splitted by comma and the data will be put into an array.
 390         // The commas in quoted strings are ignored.
 391         $commands=array();
 392         $i=0;
 393         $in=false;
 394         while ($query) {
 395                 if ($query[$i]=="'") {
 396                         $i++;
 397                         while ($i<strlen($query)) {
 398                                 if ($query[$i++]!="'") continue;
 399                                 if ($query[$i]!="'") break;
 400                                 $i++;
 401                         }
 402                         continue;
 403                 } else if ($query[$i]=='(') $in=true;
 404                 else if ($query[$i]==')') $in=false;
 405                 else if ($query[$i]==',' && (!$in)) {
 406                         $commands[]=trim(substr($query,0,$i));
 407                         $query=trim(substr($query,$i+1));
 408                         $i=0;
 409                         continue;
 410                 } // Do NOT add 'else' statement here! '$i++' is important in the following line.
 411                 if (strlen($query)<=($i++)) break;
 412         }
 413         if ($query) $commands[]=$query;
 414         return $commands;
 415 }
 416 function sqlite_changeslashes(&$text){
 417         // By SQLite, "''" is used in the quoted string instead of "\'".
 418         // In addition, only "'" seems to be allowed for perfect quotation of string.
 419         // This routine is used for the conversion from MySQL type to SQL type.
 420         // Do NOT use stripslashes() but use stripcslashes().  Otherwise, "\r\n" is not converted.
 421         if ($text==='') return '';
 422         return (sqlite_escape_string (stripcslashes((string)$text)));
 423 }
 424 function sqlite_altertable($table,$alterdefs,$dbhandle){
 425         // This function originaly came from Jon Jensen's PHP class, SQLiteDB.
 426         // There are some modifications by Katsumi.
 427         $table=str_replace("'",'',$table);
 428         if (!$alterdefs) return false;
 429         $result = sqlite_query($dbhandle,"SELECT sql,name,type FROM sqlite_master WHERE tbl_name = '".$table."' ORDER BY type DESC");
 430         if(!sqlite_num_rows($result)) return sqlite_ReturnWithError('no such table: '.$table);
 431         $row = sqlite_fetch_array($result); //table sql
 432         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 433         else $tmpname = 't'.rand(0,999999).time();
 434         $origsql = trim(preg_replace("/[\s]+/"," ",str_replace(",",", ",preg_replace("/[\(]/","( ",$row['sql'],1))));
 435         $createtemptableSQL = 'CREATE TEMPORARY '.substr(trim(preg_replace("'".$table."'",$tmpname,$origsql,1)),6);
 436         $createindexsql = array();
 437         while ($row = sqlite_fetch_array($result)) {//index sql
 438                 $createindexsql[]=$row['sql'];
 439         }
 440         $i = 0;
 441         $defs = preg_split("/[,]+/",$alterdefs,-1,PREG_SPLIT_NO_EMPTY);
 442         $prevword = $table;
 443         $oldcols = preg_split("/[,]+/",substr(trim($createtemptableSQL),strpos(trim($createtemptableSQL),'(')+1),-1,PREG_SPLIT_NO_EMPTY);
 444         $newcols = array();
 445         for($i=0;$i<sizeof($oldcols);$i++){
 446                 $colparts = preg_split("/[\s]+/",$oldcols[$i],-1,PREG_SPLIT_NO_EMPTY);
 447                 $oldcols[$i] = $colparts[0];
 448                 $newcols[$colparts[0]] = $colparts[0];
 449         }
 450         $newcolumns = '';
 451         $oldcolumns = '';
 452         reset($newcols);
 453         while(list($key,$val) = each($newcols)){
 454                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 455                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 456                         $newcolumns .= ($newcolumns?', ':'').$val;
 457                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 458                 }
 459         }
 460         $copytotempsql = 'INSERT INTO '.$tmpname.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$table;
 461         $dropoldsql = 'DROP TABLE '.$table;
 462         $createtesttableSQL = $createtemptableSQL;
 463         foreach($defs as $def){
 464                 $defparts = preg_split("/[\s]+/",$def,-1,PREG_SPLIT_NO_EMPTY);
 465                 $action = strtolower($defparts[0]);
 466                 switch($action){
 467                 case 'modify':
 468                         // Modification does not mean anything for SQLite, so just return true.
 469                         // But this command will be supported in future???
 470                         break;
 471                 case 'add':
 472                         if(($i=sizeof($defparts)) <= 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 473
 474                         // ignore if there is already such table
 475                         $exists=false;
 476                         foreach($oldcols as $value) if (str_replace("'",'',$defparts[1])==str_replace("'",'',$value)) $exists=true;
 477                         if ($exists) break;
 478
 479                         // Ignore 'AFTER xxxx' statement.
 480                         // Ignore 'FIRST' statement.
 481                         // Maybe this feature will be supprted later.
 482                         if (4<=$i && strtoupper($defparts[$i-2])=='AFTER') unset($defparts[$i-1],$defparts[$i-2]);
 483                         else if (3<=$i && strtoupper($defparts[$i-1])=='FIRST') unset($defparts[$i-1]);
 484
 485                         $createtesttableSQL = substr($createtesttableSQL,0,strlen($createtesttableSQL)-1).',';
 486                         for($i=1;$i<sizeof($defparts);$i++) $createtesttableSQL.=' '.$defparts[$i];
 487                         $createtesttableSQL.=')';
 488                         break;
 489                 case 'change':
 490                         if(sizeof($defparts) <= 3) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').($defparts[2]?' '.$defparts[2]:'').'": syntax error');
 491                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 492                                 if($newcols[$defparts[1]] != $defparts[1]){
 493                                         sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 494                                         return false;
 495                                 }
 496                                 $newcols[$defparts[1]] = $defparts[2];
 497                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 498                                 $insertval = '';
 499                                 for($i=2;$i<sizeof($defparts);$i++) $insertval.=' '.$defparts[$i];
 500                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).$insertval.substr($createtesttableSQL,$nextcommapos);
 501                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1)).$insertval.')';
 502                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 503                         break;
 504                 case 'drop':
 505                         if(sizeof($defparts) < 2) return sqlite_ReturnWithError('near "'.$defparts[0].($defparts[1]?' '.$defparts[1]:'').'": syntax error');
 506                         if($severpos = strpos($createtesttableSQL,' '.$defparts[1].' ')){
 507                                 $nextcommapos = strpos($createtesttableSQL,',',$severpos);
 508                                 if($nextcommapos) $createtesttableSQL = substr($createtesttableSQL,0,$severpos).substr($createtesttableSQL,$nextcommapos + 1);
 509                                 else $createtesttableSQL = substr($createtesttableSQL,0,$severpos-(strpos($createtesttableSQL,',')?0:1) - 1).')';
 510                                 unset($newcols[$defparts[1]]);
 511                         } else  return sqlite_ReturnWithError('unknown column "'.$defparts[1].'" in "'.$table.'"');
 512                         break;
 513                 default:
 514                         return sqlite_ReturnWithError('near "'.$prevword.'": syntax error');
 515                         break;
 516                 }
 517                 $prevword = $defparts[sizeof($defparts)-1];
 518         }
 519
 520         //this block of code generates a test table simply to verify that the columns specifed are valid in an sql statement
 521         //this ensures that no reserved words are used as columns, for example
 522         if (!sqlite_query($dbhandle,$createtesttableSQL)) return false;
 523         $droptempsql = 'DROP TABLE '.$tmpname;
 524         sqlite_query($dbhandle,$droptempsql);
 525         //end block
 526
 527         $createnewtableSQL = 'CREATE '.substr(trim(preg_replace("'".$tmpname."'",$table,$createtesttableSQL,1)),17);
 528         $newcolumns = '';
 529         $oldcolumns = '';
 530         reset($newcols);
 531         while(list($key,$val) = each($newcols)) {
 532                 if (strtoupper($val)!='PRIMARY' && strtoupper($key)!='PRIMARY' &&
 533                     strtoupper($val)!='UNIQUE'  && strtoupper($key)!='UNIQUE'){
 534                         $newcolumns .= ($newcolumns?', ':'').$val;
 535                         $oldcolumns .= ($oldcolumns?', ':'').$key;
 536                 }
 537         }
 538         $copytonewsql = 'INSERT INTO '.$table.'('.$newcolumns.') SELECT '.$oldcolumns.' FROM '.$tmpname;
 539
 540         sqlite_query($dbhandle,$createtemptableSQL); //create temp table
 541         sqlite_query($dbhandle,$copytotempsql); //copy to table
 542         sqlite_query($dbhandle,$dropoldsql); //drop old table
 543
 544         sqlite_query($dbhandle,$createnewtableSQL); //recreate original table
 545         foreach($createindexsql as $sql) sqlite_query($dbhandle,$sql); //recreate index
 546         sqlite_query($dbhandle,$copytonewsql); //copy back to original table
 547         sqlite_query($dbhandle,$droptempsql); //drop temp table
 548         return true;
 549 }
 550 function sqlite_showKeysFrom($tname,$dbhandle) {
 551         // This function is for supporing 'SHOW KEYS FROM' and 'SHOW INDEX FROM'.
 552         // For making the same result as obtained by MySQL, temporary table is made.
 553         $tname=str_replace("'",'',$tname);
 554
 555         // Create a temporary table for making result
 556         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 557         else $tmpname = 't'.rand(0,999999).time();
 558         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 559                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')");
 560
 561         // First, get the sql query when the table created
 562         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 563         $a=nucleus_mysql_fetch_assoc($res);
 564         $tablesql=$a['sql'];
 565
 566         // Check if each columns are unique
 567         $notnull=array();
 568         foreach(sqlite_splitByComma(substr($tablesql,strpos($tablesql,'(')+1)) as $value) {
 569                 $name=str_replace("'",'',substr($value,0,strpos($value,' ')));
 570                 if (strpos(strtoupper($value),'NOT NULL')!==false) $notnull[$name]='';
 571                 else $notnull[$name]='YES';
 572         }
 573
 574         // Get the primary key (and check if it is unique???).
 575         if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER NOT NULL PRIMARY KEY/i',$tablesql,$matches)) {
 576                 $pkey=str_replace("'",'',$matches[1]);
 577                 $pkeynull='';
 578         } else if (preg_match('/[^a-zA-Z_\']([\S]+)[^a-zA-Z_\']+INTEGER PRIMARY KEY/i',$tablesql,$matches)) {
 579                 $pkey=str_replace("'",'',$matches[1]);
 580                 $pkeynull='YES';
 581         } else if (preg_match('/PRIMARY KEY[\s]*?\(([^\)]+)\)/i',$tablesql,$matches)) {
 582                 $pkey=null;// PRIMARY KEY ('xxx'[,'xxx'])
 583                 foreach(explode(',',$matches[1]) as $key=>$value) {
 584                         $value=str_replace("'",'',trim($value));
 585                         $key++;
 586                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT '$value' FROM '$tname'"));
 587                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 588                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 589                                 " VALUES ('$tname', '0', 'PRIMARY', '$key',".
 590                                 " '$value', 'A', '$cardinality', null, null, '', 'BTREE', '')");
 591                 }
 592         } else $pkey=null;
 593
 594         // Check the index.
 595         $res=sqlite_query($dbhandle,"SELECT sql,name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 596         while ($a=nucleus_mysql_fetch_assoc($res)) {
 597                 if (!($sql=$a['sql'])) {// Primary key
 598                         if ($pkey && strpos(strtolower($a['name']),'autoindex')) {
 599                                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 600                                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 601                                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 602                                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 603                                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 604                                 $pkey=null;
 605                         }
 606                 } else {// Non-primary key
 607                         if (($name=str_replace("'",'',$a['name'])) && preg_match('/\(([\s\S]+)\)/',$sql,$matches)) {
 608                                 foreach(explode(',',$matches[1]) as $key=>$value) {
 609                                         $columnname=str_replace("'",'',$value);
 610                                         if (strpos(strtoupper($sql),'CREATE UNIQUE ')===0) $nonunique='0';
 611                                         else $nonunique='1';
 612                                         $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $columnname FROM '$tname'"));
 613                                         sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 614                                                 " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 615                                                 " VALUES ('$tname', '$nonunique', '$name', '".(string)($key+1)."',".
 616                                                 " '$columnname', 'A', '$cardinality', null, null, '$notnull[$columnname]', 'BTREE', '')");
 617                                 }
 618                         }
 619                 }
 620         }
 621         if ($pkey) { // The case that the key (index) is not defined.
 622                 $cardinality=nucleus_mysql_num_rows(sqlite_query($dbhandle,"SELECT $pkey FROM '$tname'"));
 623                 sqlite_query($dbhandle,"INSERT INTO $tmpname ('Table', 'Non_unique', 'Key_name', 'Seq_in_index',".
 624                         " 'Column_name', 'Collation', 'Cardinality', 'Sub_part', 'Packed', 'Null', 'Index_type', 'Comment')".
 625                         " VALUES ('$tname', '0', 'PRIMARY', '1',".
 626                         " '$pkey', 'A', '$cardinality', null, null, '$pkeynull', 'BTREE', '')");
 627                 $pkey=null;
 628         }
 629
 630         // return the final query to show the keys in MySQL style (using temporary table).
 631         return "SELECT * FROM $tmpname";
 632 }
 633 function sqlite_showFieldsFrom($tname,$dbhandle){
 634         // This function is for supporing 'SHOW FIELDS FROM' and 'SHOW COLUMNS FROM'.
 635         // For making the same result as obtained by MySQL, temporary table is made.
 636         $tname=str_replace("'",'',$tname);
 637
 638         // First, get the sql query when the table created
 639         $res=sqlite_query($dbhandle,"SELECT sql FROM sqlite_master WHERE tbl_name = '$tname' ORDER BY type DESC");
 640         $a=nucleus_mysql_fetch_assoc($res);
 641         $tablesql=trim($a['sql']);
 642         if (preg_match('/^[^\(]+\(([\s\S]*?)\)$/',$tablesql,$matches)) $tablesql=$matches[1];
 643         $tablearray=array();
 644         foreach(sqlite_splitByComma($tablesql) as $value) {
 645                 $value=trim($value);
 646                 if ($i=strpos($value,' ')) {
 647                         $name=str_replace("'",'',substr($value,0,$i));
 648                         $value=trim(substr($value,$i));
 649                         if (substr($value,-1)==',') $value=substr($value,strlen($value)-1);
 650                         $tablearray[$name]=$value;
 651                 }
 652         }
 653
 654         // Check if INDEX has been made for the parameter 'MUL' in 'KEY' column
 655         $multi=array();
 656         $res=sqlite_query($dbhandle,"SELECT name FROM sqlite_master WHERE type = 'index' and tbl_name = '$tname' ORDER BY type DESC");
 657         while ($a=nucleus_mysql_fetch_assoc($res)) $multi[str_replace("'",'',$a['name'])]='MUL';
 658
 659         // Create a temporary table for making result
 660         if (function_exists('microtime')) $tmpname='t'.str_replace('.','',str_replace(' ','',microtime()));
 661         else $tmpname = 't'.rand(0,999999).time();
 662         sqlite_query($dbhandle,"CREATE TEMPORARY TABLE $tmpname ('Field', 'Type', 'Null', 'Key', 'Default', 'Extra')");
 663
 664         // Check the table
 665         foreach($tablearray as $field=>$value) {
 666                 if (strtoupper($field)=='PRIMARY') continue;//PRIMARY KEY('xx'[,'xx'])
 667                 $uvalue=strtoupper($value.' ');
 668                 $key=(string)$multi[$field];
 669                 if ($uvalue=='INTEGER NOT NULL PRIMARY KEY ' || $uvalue=='INTEGER PRIMARY KEY ') {
 670                         $key='PRI';
 671                         $extra='auto_increment';
 672                 } else $extra='';
 673                 if ($i=strpos($uvalue,' ')) {
 674                         $type=substr($value,0,$i);
 675                         if (strpos($type,'(') && ($i=strpos($value,')')))
 676                                 $type=substr($value,0,$i+1);
 677                 } else $type='';
 678                 if (strtoupper($type)=='INTEGER') $type='int(11)';
 679                 if (strpos($uvalue,'NOT NULL')===false) $null='YES';
 680                 else {
 681                         $null='';
 682                         $value=preg_replace('/NOT NULL/i','',$value);
 683                         $uvalue=strtoupper($value);
 684                 }
 685                 if ($i=strpos($uvalue,'DEFAULT')) {
 686                         $default=trim(substr($value,$i+7));
 687                         if (strtoupper($default)=='NULL') {
 688                                 $default="";
 689                                 $setdefault="";
 690                         } else {
 691                                 if (substr($default,0,1)=="'") $default=substr($default,1,strlen($default)-2);
 692                                 $default="'".$default."',";
 693                                 $setdefault="'Default',";
 694                         }
 695                 } else if ($null!='YES' && $extra!='auto_increment') {
 696                         if (strpos(strtolower($type),'int')===false) $default="'',";
 697                         else $default="'0',";
 698                         $setdefault="'Default',";
 699                 } else {
 700                         $default="";
 701                         $setdefault="";
 702                 }
 703                 sqlite_query($dbhandle,"INSERT INTO '$tmpname' ('Field', 'Type', 'Null', 'Key', $setdefault 'Extra')".
 704                         " VALUES ('$field', '$type', '$null', '$key', $default '$extra')");
 705         }
 706
 707         // return the final query to show the keys in MySQL style (using temporary table).
 708         return "SELECT * FROM $tmpname";
 709 }
 710 function sqlite_mysql_query_debug(&$query){
 711         // The debug mode is so far used for checking query difference like "SELECT i.itime, ....".
 712         // This must be chaged to "SELECT i.itime as itime,..." for SQLite.
 713         // (This feature is not needed any more after the version 0.8.1 (see intialization query))
 714         $uquery=strtoupper($query);
 715         if (strpos($uquery,"SELECT ")!==0) return $query;
 716         if (($i=strpos($uquery," FROM "))===false) return $query;
 717         $select=sqlite_splitByComma(substr($query,7,$i-7));
 718         $query=substr($query,$i);
 719         $ret='';
 720         foreach($select as $value){
 721                 if (preg_match('/^([a-z_]+)\.([a-z_]+)$/i',$value,$matches)) {
 722                         $value=$value." as ".$matches[2];
 723                         $t=$matches[0]."=>$value\n";
 724                         $a=debug_backtrace();
 725                         foreach($a as $key=>$btrace) {
 726                                 if (!($templine=$btrace['line'])) continue;
 727                                 if (!($tempfile=$btrace['file'])) continue;
 728                                 $tempfile=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tempfile);
 729                                 $t.="$tempfile line:$templine\n";
 730                         }
 731                         sqlite_DebugMessage($t);
 732                 }
 733                 if ($ret) $ret.=', ';
 734                 $ret.=$value;
 735         }
 736         return "SELECT $ret $query";
 737 }
 738
 739 function nucleus_mysql_list_tables($p1=null,$p2=null) {
 740         global $SQLITE_DBHANDLE,$MYSQL_DATABASE;
 741         return sqlite_query($SQLITE_DBHANDLE,"SELECT name as Tables_in_$MYSQL_DATABASE FROM sqlite_master WHERE type='table'");
 742 }
 743 function nucleus_mysql_listtables($p1=null,$p2=null) { return nucleus_mysql_list_tables($p1,$p2);}
 744
 745 function nucleus_mysql_affected_rows($p1=null){
 746         global $SQLITE_DBHANDLE;
 747         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 748         return sqlite_changes($dbhandle);
 749 }
 750
 751 function nucleus_mysql_error($p1=null){
 752         global $SQLITE_DBHANDLE;
 753         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 754         return sqlite_error_string ( sqlite_last_error ($dbhandle) );
 755 }
 756
 757 function nucleus_mysql_fetch_array($p1,$p2=SQLITE_BOTH){
 758         return sqlite_fetch_array ($p1,$p2);
 759 }
 760
 761 function nucleus_mysql_fetch_assoc($p1){
 762         return sqlite_fetch_array($p1,SQLITE_ASSOC);
 763 }
 764
 765 function nucleus_mysql_fetch_object($p1,$p2=SQLITE_BOTH){
 766         if (is_array($ret=sqlite_fetch_array ($p1,$p2))) {
 767                 $o=new SQLITE_OBJECT;
 768                 foreach ($ret as $key=>$value) {
 769                         if (strstr($key,'.')) {// Remove table name.
 770                                 $key=preg_replace('/^(.+)\."(.+)"$/','"$2"',$key);
 771                                 $key=preg_replace('/^(.+)\.([^.^"]+)$/','$2',$key);
 772                         }
 773                         $o->$key=$value;
 774                 }
 775                 return $o;
 776         } else return false;
 777 }
 778
 779 function nucleus_mysql_fetch_row($p1){
 780         return sqlite_fetch_array($p1,SQLITE_NUM);
 781 }
 782
 783 function nucleus_mysql_field_name($p1,$p2){
 784         return sqlite_field_name ($p1,$p2);
 785 }
 786
 787 function nucleus_mysql_free_result($p1){
 788         // ???? Cannot find corresponding function of SQLite.
 789         // Maybe SQLite is NOT used for the high spec server
 790         // that need mysql_free_result() function because of
 791         // many SQL-queries in a script.
 792         return true;
 793 }
 794
 795 function nucleus_mysql_insert_id($p1=null){
 796         global $SQLITE_DBHANDLE;
 797         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 798         return sqlite_last_insert_rowid ($dbhandle);
 799 }
 800
 801 function nucleus_mysql_num_fields($p1){
 802         return sqlite_num_fields ($p1);
 803 }
 804
 805 function nucleus_mysql_num_rows($p1){
 806         return sqlite_num_rows ($p1);
 807 }
 808 function nucleus_mysql_numrows($p1){
 809         return sqlite_num_rows ($p1);
 810 }
 811
 812 function nucleus_mysql_result($p1,$p2,$p3=null){
 813         if ($p3) return sqlite_ReturnWithError('nucleus_mysql_result');
 814         if (!$p2) return sqlite_fetch_single ($p1);
 815         $a=sqlite_fetch_array ($p1);
 816         return $a[$p2];
 817 }
 818
 819 function nucleus_mysql_unbuffered_query($p1,$p2=null){
 820         return nucleus_mysql_query($p1,$p2,true);
 821 }
 822
 823 function nucleus_mysql_client_encoding($p1=null){
 824         return sqlite_libencoding();
 825 }
 826
 827 function nucleus_mysql_data_seek($p1,$p2) {
 828         return sqlite_seek($p1,$p2);
 829 }
 830
 831 function nucleus_mysql_errno ($p1=null){
 832         global $SQLITE_DBHANDLE;
 833         if (!($dbhandle=$p1)) $dbhandle=$SQLITE_DBHANDLE;
 834         return sqlite_last_error($dbhandle);
 835 }
 836
 837 function nucleus_mysql_escape_string ($p1){
 838         // The "'" will be changed to "''".
 839         // This way works for both MySQL and SQLite when single quotes are used for string.
 840         // Note that single quote is always used in this wrapper.
 841         // If a plugin is made on SQLite-Nucleus and such plugin will be used for MySQL-Nucleus,
 842         // nucleus_mysql_escape_string() will be changed to mysql_escape_string() and
 843         // this routine won't be used, so this way won't be problem.
 844         return sqlite_escape_string($p1);
 845 }
 846
 847 function nucleus_mysql_real_escape_string ($p1,$p2=null){
 848         //addslashes used here.
 849         return addslashes($p1);
 850 }
 851
 852 function nucleus_mysql_create_db ($p1,$p2=null){
 853         // All prameters are ignored.
 854         // Returns always true;
 855         return true;
 856 }
 857
 858 function nucleus_mysql_pconnect($p1=null,$p2=null,$p3=null,$p4=null,$p5=null){
 859         global $SQLITE_DBHANDLE,$SQLITECONF;
 860         sqlite_close ($SQLITE_DBHANDLE);
 861         $SQLITE_DBHANDLE=sqlite_popen($SQLITECONF['DBFILENAME']);
 862         return ($SQLITE['DBHANDLE']=$SQLITE_DBHANDLE);
 863 }
 864
 865 function nucleus_mysql_fetch_field($p1,$p2=null){
 866         if ($p2) return sqlite_ReturnWithError('nucleus_mysql_fetch_field');
 867         // Only 'name' is supported.
 868         $o=new SQLITE_OBJECT;
 869         $o->name=array();
 870         if(is_array($ret=sqlite_fetch_array ($p1,SQLITE_ASSOC )))
 871                 foreach ($ret as $key=>$value) {
 872                         if (is_string($key)) array_push($o->name,$key);
 873                 }
 874         return $o;
 875
 876 }
 877
 878 // This function is called instead of _execute_queries() in backp.php
 879 function sqlite_restore_execute_queries(&$query){
 880         global $DIR_NUCLEUS,$DIR_LIBS,$DIR_PLUGINS,$CONF;
 881
 882         // Skip until the first "#" or "--"
 883         if (($i=strpos($query,"\n#"))===false) $i=strlen($query);
 884         if (($j=strpos($query,"\n--"))===false) $j=strlen($query);
 885         if ($i<$j) $query=substr($query,$i+1);
 886         else  $query=substr($query,$j+1);
 887
 888         // Save the query to temporary file in sqlite directory.
 889         if (function_exists('microtime')) {
 890                 $prefix=preg_replace('/[^0-9]/','',microtime());
 891         } else {
 892                 srand(time());
 893                 $prefix=(string)rand(0,999999);
 894         }
 895         $tmpname=tempnam($DIR_NUCLEUS.'sqlite/',"tmp$prefix");
 896         if (!($handle=@fopen($tmpname,'w'))) return 'Cannot save temporary DB file.';
 897         fwrite($handle,$query);
 898         fclose($handle);
 899         $tmpname=preg_replace('/[\s\S]*?[\/\\\\]([^\/\\\\]+)$/','$1',$tmpname);
 900
 901         // Read the option from NP_SQLite
 902         if (!class_exists('NucleusPlugin')) { include($DIR_LIBS.'PLUGIN.php');}
 903         if (!class_exists('NP_SQLite')) { include($DIR_PLUGINS.'NP_SQLite.php'); }
 904         $p=new NP_SQLite();
 905         if (!($numatonce=@$p->getOption('numatonce'))) $numatonce=20;
 906         if (!($refreshwait=@$p->getOption('refreshwait'))) $refreshwait=1;
 907
 908         // Start process.
 909         $url="plugins/sqlite/restore.php?dbfile=$tmpname&numatonce=$numatonce&refreshwait=$refreshwait";
 910         header('HTTP/1.0 301 Moved Permanently');
 911         header('Location: '.$url);
 912         exit('<html><body>Moved Permanently</body></html>');
 913 }
 914
 915 ?>